abstract stringlengths 3 192k | title stringlengths 4 857 |
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in this work, we investigate the thermodynamic properties of black holes (bhs) that have non-trivial topological features in their phase diagrams. we consider three different models of bhs: (1) a class of bhs in drgt massive gravity, which adds a mass term to general relativity; (2) a class of bhs in 5d yang-mills mass... | thermodynamic topological classifications of well-known black holes |
we discuss relations between closed and open string amplitudes at one-loop. while at tree-level these relations are known as kawai-lewellen-tye (klt) and/or double copy relations, here we investigate how such relations are manifested at one-loop. while there exist examples of one-loop closed string amplitudes that can ... | one-loop double copy relation in string theory |
recent works by chandrasekaran, penington, and witten have shown in various special contexts that the quantum-corrected ryu-takayanagi (rt) entropy (or its covariant hubeny-rangamani-takayanagi (hrt) generalization) can be understood as computing an entropy on an algebra of bulk observables. these arguments do not rely... | algebras and hilbert spaces from gravitational path integrals: understanding ryu-takayanagi/hrt as entropy without invoking holography |
we present the first-principles derivation of a weak-strong duality between the fishnet theory in four dimensions and a discretized stringlike model living in five dimensions. at strong coupling, the dual description becomes classical and we demonstrate explicitly the classical integrability of the model. we test our r... | derivation of the holographic dual of a planar conformal field theory in 4d |
we study the space of open string effective field theories by combining the constraint of unitarity and monodromy relations for the four-point amplitude. the latter is a reflection of an underlying disk correlator with singularities at the boundary. by assuming maximal susy the resulting bootstrap isolates wilson coeff... | bootstrapping string theory eft |
we examine universal positivity constraints on $2 \to 2$ scattering in 4d planar $n=4$ supersymmetric yang-mills theory with higher-derivative corrections. we present numerical evidence that the convex region of allowed wilson coefficients (the ``eft-hedron'') flattens completely along about one-third of its dimensions... | flattening of the eft-hedron: supersymmetric positivity bounds and the search for string theory |
we consider the boundary dual of ads3xs3xk3 for ns5-flux q5=1, which is described by a sigma model with target space given by the d-fold symmetric product of k3. building on results in algebraic geometry, we address the problem of deforming it away from the orbifold point from the viewpoint of topological strings. we p... | gromov-witten/hilbert versus ads3/cft2 correspondence |
we construct the symplectic form on the covariant phase space of the open string field theory on a zz-brane in c=1 string theory, and determine the energy of the rolling tachyon solution, confirming sen's earlier proposal based on boundary conformal field theory and closed string considerations. | rolling tachyon and the phase space of open string field theory |
the count of microstates for supersymmetric black holes is typically obtained from a supersymmetric index in weakly-coupled string theory. we find the saddles in the gravitational path integral corresponding to this index in a general theory of $n=2$ supergravity in asymptotically flat space. this saddle exhibits a new... | new forms of attraction: attractor saddles for the black hole index |
we give evidence that supersymmetric anti-de sitter vacua of five-dimensional supergravity cannot be scale separated as a consequence of quantum gravity constraints, such as the weak gravity conjecture or the species scale. we show this in a model-independent way for the minimal and the maximal theory and we believe th... | quantum gravity constraints on scale separation and de sitter in five dimensions |
much insight into the dynamics of quantum field theories can be gained by studying the relationship between field theories in different dimensions. an interesting observation is that when two theories are related by dimensional reduction on a compact surface, their 't hooft anomalies corresponding to continuous symmetr... | 5d to 3d compactifications and discrete anomalies |
we consider the fate of a massless (or ultra-relativistic massive) string probe propagating down the btz-like throat of a microstate geometry in the d1-d5 system. far down the throat, the probe encounters large tidal forces that stretch and excite the string. the excitations are limited by the very short transit time t... | the harder they fall, the bigger they become: tidal trapping of strings by microstate geometries |
we provide the first holographic evidence for the existence of a nonsupersymmetric conformal manifold arising from exactly marginal but supersymmetry-breaking deformations of a superconformal three-dimensional field theory. in particular, we construct a 2-parameter nonsupersymmetric deformation of a supersymmetric ads ... | holographic evidence for nonsupersymmetric conformal manifolds |
we observe a direct relation between the existence of fundamental axionic strings, dubbed eft strings, and infinite distance limits in 4d $\mathcal{n}=1$ efts coupled to gravity. the backreaction of eft strings can be interpreted as rg flow of their couplings, and allows one to probe different regimes within the field ... | the eft stringy viewpoint on large distances |
einstein-gauss-bonnet theory is a string-generated gravity theory when approaching the low energy limit. by introducing the higher order curvature terms, this theory is supposed to help to solve the black hole singularity problem. in this work, we investigate the evaporation of the static spherically symmetric neutral ... | hawking evaporation of einstein-gauss-bonnet ads black holes in d ⩾4 dimensions |
we detail the properties of the veneziano, virasoro, and coon amplitudes. these tree-level four-point scattering amplitudes may be written as infinite products with an infinite sequence of simple poles. our approach for the coon amplitude uses the mathematical theory of q-analysis. we interpret the coon amplitude as a ... | properties of infinite product amplitudes: veneziano, virasoro, and coon |
we study 4d membranes in type iia flux compactifications of the form ads4× x6, where x6 admits a calabi-yau metric. these models feature scale separation and d6-branes/o6-planes on three-cycles of x6. when the latter are treated as localised sources, explicit solutions to the 10d equations of motion and bianchi identit... | bionic membranes and ads instabilities |
we study the hamiltonian lattice yang-mills theory based on spin networks that provide a useful basis to represent the physical states satisfying the gauss law constraints. we focus on su(2) yang-mills theory in (2 + 1) dimensions. following the string-net model, we introduce a regularization of the kogut-susskind hami... | string-net formulation of hamiltonian lattice yang-mills theories and quantum many-body scars in a nonabelian gauge theory |
in this note, we prove that the one-loop pfaffian of the non-perturbative superpotential generated by euclidean d-branes in type ii compactifications on orientifolds of calabi-yau threefolds is determined by the moduli integral of the new supersymmetric index defined by cecotti, fendley, intriligator, and vafa. as this... | d-instanton, threshold corrections, and topological string |
string compactifications on an orbi-folded torus with complex structure give rise to chiral fermions, spontaneously broken cp, modular invariance. we show that this allows simple effective theories of flavour and cp where: i) the qcd angle vanishes; ii) the ckm phase is large; iii) quark and lepton masses and mixings c... | modular invariance and the qcd angle |
we compute the zz annulus one-point function of the cosmological constant operator in non-critical string theory, regulating divergences from the boundaries of moduli space using string field theory. we identify a subtle issue in a previous analysis of these divergences, which was done in the context of the c = 1 strin... | the zz annulus one-point function in non-critical string theory: a string field theory analysis |
we study non-planar correlators in n = 4 super-yang-mills in mellin space. we focus in the stress tensor four-point correlator to order 1/n4 and in a strong coupling expansion. this can be regarded as the genus-one four-point graviton amplitude of type iib string theory on ads5× s5 in a low energy expansion. both the l... | on genus-one string amplitudes on ads5 × s5 |
in this article, we aim to investigate some cylindrically symmetric solutions in a very well known modified theory named as f (r ,ϕ ,x ) theory of gravity, where the terms r, ϕ and x are clarified as ricci scalar, scalar potential, and kinetic term respectively. for this purpose, we consider the cylindrically symmetric... | a study of cylindrically symmetric solutions in f (r ,ϕ ,x ) theory of gravity |
we argue that corner contributions in gravity action (hayward term) capture the essence of gravity edge modes, which lead to gravitational area entropies, such as the black hole entropy and holographic entanglement entropy. we explain how the hayward term and the corresponding edge modes in gravity are explained by hol... | gravity edges modes and hayward term |
we study the constraint on the inflationary energy scale from the recently proposed trans-planckian censorship conjecture (tcc). we find a universal upper bound on the inflationary hubble expansion rate hinf which is solely determined by the reheating temperature trh: hinf/mpl≲t0/trh, where t0 is the photon temperature... | universal upper bound on the inflationary energy scale from the trans-planckian censorship conjecture |
s-matrix formulation of gravity excludes de sitter vacua. in particular, this is organic to string theory. the s-matrix constraint is enforced by an anomalous quantum break-time proportional to the inverse values of gravitational and/or string couplings. due to this, de sitter can satisfy the conditions for a valid vac... | s-matrix and anomaly of de sitter |
tensor networks have found a wide use in a variety of applications in physics and computer science, recently leading to both theoretical insights as well as practical algorithms in machine learning. in this work we explore the connection between tensor networks and probabilistic graphical models, and show that it motiv... | from probabilistic graphical models to generalized tensor networks for supervised learning |
an infinite class of analytic ads7 × s 3 solutions has recently been found. the s 3 is distorted into a "crescent roll" shape by the presence of d8-branes. these solutions are conjectured to be dual to a class of "linear quivers", with a large number of gauge groups coupled to (bi-)fundamental matter and tensor fields.... | 6d holographic anomaly match as a continuum limit |
we study 5d supersymmetric black holes which descend from strings of generic n=(1,0) supergravity in 6d. these strings have an f-theory realization in 6d as d3 branes wrapping smooth genus g curves in the base of elliptic 3-folds. they enjoy (0 , 4) worldsheet supersymmetry with an extra su(2) lcurrent algebra at level... | f-theory, spinning black holes and multi-string branches |
the relationship of two dimensional quantum field theory and isomonodromic deformations of fuchsian systems has a long history. recently four-dimensional n = 2 gauge theories joined the party in a multitude of roles. in this paper we study the vacuum expectation values of intersecting half-bps surface defects in su(2) ... | riemann-hilbert correspondence and blown up surface defects |
we derive the first law of black hole mechanics in the context of the heterotic superstring effective action to first order in α' using wald's formalism. we carefully take into account all the symmetries of the theory and, as a result, we obtain a manifestly gauge- and lorentz-invariant entropy formula in which all the... | the first law and wald entropy formula of heterotic stringy black holes at first order in α' |
based on the flux-scaling scenario we study a model consisting on type iib string theory compactified on a calabi-yau manifold with a frozen complex structure in the presence of generic fluxes. the model contains (meta)stable minkowski and de sitter vacua as well as inflationary directions driven by two independent lin... | two-field axion inflation and the swampland constraint in the flux-scaling scenario |
we discuss the spectrum of a string propagating on η-deformed ads5 × s5 by treating its worldsheet theory as an integrable quantum field theory. the exact s-matrix of this field theory is given by a qdeformation of the ads5 × s5 worldsheet s-matrix with a real deformation parameter. by considering mirror (double wick-r... | the exact spectrum and mirror duality of the (ads5 × s 5) ηsuperstring |
string theory is canonically accompanied with a space-time interpretation which determines s-matrix-like observables, and connects to the standard physics at low energies in the guise of local effective field theory. recently, we have introduced a reformulation of string theory which does not rely on an a priori space-... | metastring theory and modular space-time |
we analyze the global symmetries and anomalies of 4d n = 1 field theories that arise from a stack of n m5-branes probing a class of flux backgrounds. these backgrounds consist of a resolved ℂ2/&z;k singularity fibered over a smooth riemann surface of genus g ≥ 2, supported by a non-trivial g4-flux configuration labeled... | m5-branes probing flux backgrounds |
liquid crystals are widely known for their technological uses in displays, electro-optics, photonics and nonlinear optics, but these applications typically rely on defining and switching non-topological spatial patterns of the optical axis. here, we demonstrate how a liquid crystal's optical axis patterns with singular... | topological steering of light by nematic vortices and analogy to cosmic strings |
we discuss aspects of the possible transition between small black holes and highly excited fundamental strings. we focus on the connection between black holes and the self gravitating string solution of horowitz and polchinski. this solution is interesting because it has non-zero entropy at the classical level and it i... | on the black hole/string transition |
we revisit the chiral kinetic equation from high density effective theory approach, finding a chiral kinetic equation differs from counterpart derived from field theory in high order terms in the o(1 /μ) expansion, but in agreement with the equation derived in on-shell effective field theory upon identification of cuto... | chiral kinetic theory from effective field theory revisited |
we study the energy dependence of global polarization of λ hyperons in peripheral au-au collisions. we combine the calculation of vorticity and strange chemical potential in the framework of the kinetic quark-gluon-string model with the anomalous mechanism related to the axial vortical effect. we pay special attention ... | hyperon polarization in heavy-ion collisions and holographic gravitational anomaly |
the aim of this paper is to elucidate a close connection between the black hole area law and the infinite distance conjecture in the context of the swampland. we consider families of black hole geometries, parametrized by their event horizon areas or by the values of their entropies, and show that the infinite entropy ... | infinite black hole entropies at infinite distances and tower of states |
in the first part of this paper we will work out a close and so far not yet noticed correspondence between the swampland approach in quantum gravity and geometric flow equations in general relativity, most notably the ricci flow. we conjecture that following the gradient flow towards a fixed point, which is at infinite... | swampland, gradient flow and infinite distance |
based on the construction of poisson-lie t -dual σ-models from a common parent action we study a candidate for the non-abelian respectively poisson-lie t -duality group. this group generalises the well-known abelian t -duality group o( d, d) and we explore some of its subgroups, namely factorised dualities, b- and β-sh... | generalised fluxes, yang-baxter deformations and the o(d,d) structure of non-abelian t -duality |
we find a family of complex saddle-points at large n of the matrix model for the superconformal index of su(n ) n = 4 super yang-mills theory on s3× s1 with one chemical potential τ . the saddle-point configurations are labelled by points (m, n) on the lattice λτ = &z;τ + &z; with gcd(m, n) = 1. the eigenvalues at a gi... | supersymmetric phases of 4d n = 4 sym at large n |
we derive bounds on the number of abelian gauge group factors in six-dimensional gravitational theories with minimal supersymmetry and in their f -theoretic realizations. these bounds follow by requiring consistency of certain bogomol'nyi-prasad-sommerfield strings in the spectrum of the theory, as recently proposed in... | swampland bounds on the abelian gauge sector |
the interplay of spin and charge degrees of freedom, introduced by doping mobile holes into a mott insulator with strong antiferromagnetic (afm) correlations, is at the heart of strongly correlated matter such as high-tc cuprate superconductors. here, we capture this interplay in the strong coupling regime and propose ... | microscopic spinon-chargon theory of magnetic polarons in the t -j model |
the recently proposed swampland criteria aim to evade any (meta-) stable de sitter constructions within string landscapes, making it difficult to accommodate accelerating phases, like dark energy domination and inflationary epoch, in cosmology. in this note, we analyze the status of various models of single-field slow-... | note on single-field inflation and the swampland criteria |
we study the dynamics of localized and fully backreacting anti-d3 branes at the tip of the klebanov-strassler geometry. we use a non-supersymmetric version of the polchinski-strassler analysis to compute the potential for anti-d3 branes to polarize into all kinds of five-brane shells in all possible directions. we find... | giant tachyons in the landscape |
we derive a simple set of nonlinear, (1 +1 )-dimensional partial differential equations that describe the dynamical evolution of black strings and branes to leading order in the expansion in the inverse of the number of dimensions d . these equations are easily solved numerically. their solution shows that thin enough ... | evolution and end point of the black string instability: large d solution |
it is well known that the low energy expansion of tree-level superstring scattering amplitudes satisfies a suitably defined version of uniform transcendentality. in this paper it is argued that there is a natural extension of this definition that applies to the genus-one four-graviton type ii superstring amplitude to a... | exploring transcendentality in superstring amplitudes |
we present a five-dimensional anisotropic holographic model for light quarks supported by einstein-dilaton-two-maxwell action. this model generalizing isotropic holographic model with light quarks is characterized by a van der waals-like phase transition between small and large black holes. we compare the location of t... | holographic anisotropic model for light quarks with confinement-deconfinement phase transition |
we construct a three-parameter family of non-extremal microstate geometries, or "microstrata", that are dual to states and deformations of the d1-d5 cft. these families are non-extremal analogues of superstrata. we find these microstrata by using a q-ball-inspired ansatz that reduces the equations of motion to solving ... | q-balls meet fuzzballs: non-bps microstate geometries |
proton decay is a smoking gun signature of grand unified theories (guts). searches by super-kamiokande have resulted in stringent limits on the gut symmetry-breaking scale. the large-scale multipurpose neutrino experiments dune, hyper-kamiokande, and juno will either discover proton decay or further push the symmetry-b... | gravitational waves and proton decay: complementary windows into grand unified theories |
we describe timelike linear dilaton backgrounds of supercritical string theories as time-dependent dynamical cobordisms in string theory, with their spacelike singularity as a boundary defining the beginning of time. we propose and provide compelling evidence that its microscopic interpretation corresponds to a region ... | dynamical cobordism and the beginning of time: supercritical strings and tachyon condensation |
it has been proposed that cobordism and k-theory groups, which can be mathematically related in certain cases, are physically associated to generalised higher-form symmetries. as a consequence, they should be broken or gauged in any consistent theory of quantum gravity, in accordance with swampland conjectures. we prov... | dimensional reduction of cobordism and k-theory |
we initiate a systematic investigation of f-theory on elliptic fibrations with singularities which cannot be resolved without breaking the calabi-yau condition, corresponding to q-factorial terminal singularities. it is the purpose of this paper to elucidate the physical origin of such non-crepant singularities in codi... | terminal singularities, milnor numbers, and matter in f-theory |
in anti-de sitter space a highly accelerating observer perceives a rindler horizon. the two rindler wedges in adsd+1 are holographically dual to an entangled conformal field theory that lives on two boundaries with geometry &r; × hd-1. for ads3, the holographic duality is especially tractable, allowing quantum-gravitat... | rindler-ads/cft |
string theory has few or no stable nonsupersymmetric or de sitter vacua, only metastable ones. antibranes are a simple source of supersymmetry breaking, as in the kklt model, but various arguments have been given that these fail to produce the desired vacua. proper analysis of the system requires identifying the correc... | brane/antibrane dynamics and kklt stability |
we find a two-parameter family of generalized superstrata that emerge as smooth, supersymmetric solutions in three-dimensional gauged supergravity coupled to additional scalar fields. this new family of generalized superstrata are smooth microstate geometries and may be thought of as supersymmetric coulomb-branch exten... | new superstrata from three-dimensional supergravity |
brane systems provide a large class of gauge theories that arise in string theory. this paper demonstrates how such brane systems fit with a somewhat exotic geometric object, called the affine grassmannian. this gives a strong motivation to study physical aspects of the affine grassmannian. explicit quivers are present... | branes, quivers, and the affine grassmannian |
the building blocks of 6d (1, 0) scfts include certain rank one theories with gauge group g = su(3), so(8), f4, e6,7,8. in this paper, we propose a universal recursion formula for the elliptic genera of all such theories. this formula is solved from the elliptic blowup equations introduced in our previous paper. we exp... | elliptic blowup equations for 6d scfts. part ii. exceptional cases |
we continue our study of string correlators on euclidean \text{ads}_3ads3 with pure ns-ns flux. the worldsheet and spacetime correlators have a rich analytic structure, which we analyse completely for genus 0 four-point functions. we show that correlators exhibit a simple behaviour near their singularities. the spaceti... | string correlators on \\text{ads}_3: analytic structure and dual cft |
motivated by the intimate connection between the strong cp problem and the flavor structure of the standard model, we present a flavor model that revives and extends the classic mu= 0 solution to the strong cp problem. qcd is embedded into a su(3)1 × su(3)2 × su(3)3 gauge group, with each generation of quarks charged u... | a flavorful factoring of the strong cp problem |
we explore the holographic duality between string theory in backgrounds that interpolate between asymptotically linear dilaton spacetime in the uv and ads3 in the ir, and single-trace t t ¯ deformed cft. in particular, we explain how the deformation of states in the boundary theory is reflected in the bulk geometry, an... | comments on single-trace t t ¯ holography |
geodesic probes in certain horizonless microstate geometries experience extreme tidal forces long before reaching the region where these geometries differ significantl from the extremal btz black hole. the purpose of this paper is to show that this behavior is a universal feature of all geometries that have a long btz ... | early scrambling and capped btz geometries |
despite impressive advances in the ads3/cft2 correspondence, the setup involving ramond-ramond backgrounds, which is related to the d1-d5 system of branes, remained relatively poorly understood. we use the mirror thermodynamic bethe ansatz (tba) equations recently constructed by frolov and sfondrini to study the spectr... | tensionless limit of pure-ramond-ramond strings and ads3/cft2 |
realising de sitter vacua in string theory is challenging. for this reason it has been conjectured that de sitter vacua inhabit the swampland of inconsistent low-energy effective theories coupled to gravity. since de sitter is an attractor for $\lambda$cdm, the conjecture calls $\lambda$cdm into question. reality appea... | de sitter swampland, $h_0$ tension & observation |
we consider on one hand the possibility that a supersymmetric n = 1 conformal gauge theory has a strongly coupled locus on the conformal manifold at which a different, dual, conformal gauge theory becomes a good weakly coupled description. on the other hand we discuss the possibility that strongly coupled theories, e.g... | n = 1 conformal dualities |
we compute the normalization of the multiple d-instanton amplitudes in type iib string theory and show that the result agrees with the prediction of s-duality due to green and gutperle. | muti-instanton amplitudes in type iib string theory |
we propose a lepton model under modular $a_4$ and gauged $u(1)_r$ symmetries, in which the neutrino masses are induced at one-loop level. thanks to the modular $a_4$ symmetry, we have several predictions on the lepton sector, especially, on fixed points of $\tau=i,\omega\equiv e^{2\pi i/3},i\times \infty$ each of which... | lepton sector in modular $a_4$ and gauged $u(1)_r$ symmetry |
we study the gravity solution dual to the d0 brane quantum mechanics, or bfss matrix model, in the 't hooft limit.the classical physics described by this gravity solution is invariant under a scaling transformation, which changes the action with a specific critical exponent, sometimes called the hyperscaling violating ... | scaling similarities and quasinormal modes of d0 black hole solutions |
we consider a minimal non-supersymmetric so(10) grand unified theory (gut) model that can reproduce the observed fermionic masses and mixing parameters of the standard model. we calculate the scales of spontaneous symmetry breaking from the gut to the standard model gauge group using two-loop renormalisation group equa... | a predictive and testable unified theory of fermion masses, mixing and leptogenesis |
to establish metastable de sitter vacua or even just scale-separated ads, control over perturbative corrections to the string-derived leading-order 4d lagrangian is crucial. such corrections can be classified in three types: first, there are genuine loop effects, insensitive to the uv completion of the 10d theory. seco... | loops, local corrections and warping in the lvs and other type iib models |
in this work, we investigate the existence of string theory solutions with a d-dimensional (quasi-) de sitter spacetime, for 3 ≤ d ≤ 10. considering classical compactifications, we derive no-go theorems valid for general d. we use them to exclude (quasi-) de sitter solutions for d ≥ 7. in addition, such solutions are f... | (quasi-) de sitter solutions across dimensions and the tcc bound |
f-theory compactifications on appropriate local elliptic calabi-yau manifolds engineer six dimensional superconformal field theories and their mass deformations. the partition function ztop of the refined topological string on these geometries captures the particle bps spectrum of this class of theories compactified on... | refined bps invariants of 6d scfts from anomalies and modularity |
recently a new class of 1/8-bps regular geometries in type iib string theory was constructed in arxiv:1503.01463. in this paper we provide a precise description of the semiclassical states dual, in the ads/cft sense, to these geometries. in explicit examples we show that the holographic 1-point functions and the ryu-ta... | ads3 holography for 1/4 and 1/8 bps geometries |
in this paper, we establish a fully string-theoretic framework for calculating one-loop higgs masses directly from first principles in perturbative closed-string theories. our framework makes no assumptions other than world sheet modular invariance and is therefore applicable to all closed strings, regardless of the sp... | calculating the higgs mass in string theory |
in type i seesaw models, the right-handed neutrinos are typically super-heavy, consistent with the generation of baryon asymmetry via standard leptogenesis. primordial gravitational waves of cosmological origin provides a new window to probe such high scale physics, which would otherwise be inaccessible. by considering... | cosmic string gravitational waves from global u(1)b−l symmetry breaking as a probe of the type i seesaw scale |
we study the first-order in α' corrections to non-extremal 4-dimensional dyonic reissner-nordström (rn) black holes with equal electric and magnetic charges in the context of heterotic superstring effective field theory (hst) compactified on a t6. the particular embedding of the dyonic rn black hole in hst considered h... | α' corrections of reissner-nordström black holes |
biadjoint scalar field theories are increasingly important in the study of scattering amplitudes in various string and field theories. recently, some first exact nonperturbative solutions of biadjoint scalar theory were presented, with a pure power-like form corresponding to isolated monopole-like objects located at th... | extended solutions for the biadjoint scalar field |
based on general mathematical assumptions we give an independent, elementary derivation of a theorem by brown and dupont (2018 talk given by f brown in 'string math' (sendai, june 2018)) which states that tree-level amplitudes of closed and open strings are related through the single-valued map 'sv'. this relation can ... | closed strings as single-valued open strings: a genus-zero derivation |
we discuss type iib 5-brane configurations for 5d n=1 gauge theories with hypermultiplets in the rank-3 antisymmetric representation and with various other hypermultiplets, which flow from a uv fixed point at the infinite coupling. we propose 5-brane web diagrams for the theories of su(6) and sp(3) gauge groups with ra... | rank-3 antisymmetric matter on 5-brane webs |
we investigate the classical stability of supersymmetric, asymptotically flat, microstate geometries with five non-compact dimensions. such geometries admit an "evanescent ergosurface": a timelike hypersurface of infinite redshift. on such a surface, there are null geodesics with zero energy relative to infinity. these... | instability of supersymmetric microstate geometries |
we argue that the heterotic string does not have classical vacua corresponding to de sitter space-times of dimension four or higher. the same conclusion applies to type ii vacua in the absence of ramond-ramond fluxes. our argument extends prior supergravity no-go results to regimes of high curvature. we discuss the int... | constraining de sitter space in string theory |
we demonstrate separability of the maxwell's equations in the myers-perry-(a)ds geometry and derive explicit solutions for various polarizations. application of our construction to the four-dimensional kerr black hole leads to a new ansatz for the maxwell field which has significant advantages over the previously known... | maxwell's equations in the myers-perry geometry |
we explore the gravitational implementation of the field theory cardy-like limit recently used in the successful microstate countings of ads black hole entropy in various dimensions. on the field theory side, the cardy-like limit focuses on a particular scaling of conserved electric charges and angular momenta and we f... | gravitational cardy limit and ads black hole entropy |
the direct photon spectra and flow (v2, v3) in heavy-ion collisions at cern super proton synchrotron, bnl relativistic heavy ion collider, and cern large hadron collider energies are investigated within a relativistic transport approach incorporating both hadronic and partonic phases, the parton-hadron-string dynamics ... | hadronic and partonic sources of direct photons in relativistic heavy-ion collisions |
recently, general methods of bosonization beyond 1+1 dimensions have been developed. in this article, we review these bosonizations and extend them to the case with boundary conditions. in particular, we study the case when the bulk theory is a $g$-symmetry protected topological phase and the boundary theory has a $g$ ... | anomalies and bosonization |
macroscopic computation of the degeneracy / index of a bps black hole requires carrying out string theory path integral over the near horizon geometry of the black hole. it has been suggested that the path integral can be localized to a finite dimensional subspace using the unbroken supersymmetries of the near horizon ... | revisiting localization for bps black hole entropy |
we discuss the cardy limit of 3d supersymmetric partition functions which allow the factorization into the hemisphere indices: the generalized superconformal index, the refined topologically twisted index and the squashed sphere partition function. in the cardy limit, the hemisphere index can be evaluated by the saddle... | universal 3d cardy block and black hole entropy |
we show how to implement a rydberg-atom quantum simulator to study the nonequilibrium dynamics of an abelian (1 +1 )-dimensional lattice gauge theory. the implementation locally codifies the degrees of freedom of a z3 gauge field, once the matter field is integrated out by means of the gauss local symmetries. the quant... | real-time-dynamics quantum simulation of (1 +1 )-dimensional lattice qed with rydberg atoms |
we formulate general definitions of semi-classical gauge transformations for noncommutative gauge theories in general backgrounds of string theory, and give novel explicit constructions using techniques based on symplectic embeddings of almost poisson structures. in the absence of fluxes the gauge symmetries close a po... | symplectic embeddings, homotopy algebras and almost poisson gauge symmetry |
we construct novel black strings that are neither time-translation invariant, nor axisymmetric, nor translationally invariant in the string direction, but nevertheless have a helical killing vector field. these solutions branch from the superradiant instability of d = 6 myers-perry black strings with equal angular mome... | gregory-laflamme and superradiance encounter black resonator strings |
a substantial body of phenomenological and theoretical work over the last few years strengthens the possibility that the vacuum energy density (ved) of the universe is dynamical, and in particular that it adopts the 'running vacuum model' (rvm) form, in which the ved evolves mildly as δρvac(h)∼νeffmpl2oh2, where h is t... | running vacuum in the universe: phenomenological status in light of the latest observations, and its impact on the σ8 and h0 tensions |
cosmic strings, if they exist, source nonlinear and non-gaussian perturbations all the way back to the time of equal matter and radiation (and earlier). here, we compute the mass function of halos seeded by a scaling distribution of cosmic string loops, and we compare the results with the predictions of the standard ga... | early structure formation from cosmic string loops in light of early jwst observations |
tree-level moduli stabilization via geometric and non-geometric fluxes in type iib orientifolds on calabi-yau manifolds is investigated. the focus is on stable non-supersymmetric minima, where all moduli are fixed except for some massless axions. the scenario includes the purely axionic orientifold-odd moduli. a set of... | a flux-scaling scenario for high-scale moduli stabilization in string theory |
the full two-loop amplitudes for five massless states in type ii and heterotic superstrings are constructed in terms of convergent integrals over the genus-two moduli space of compact riemann surfaces and integrals of green functions and abelian differentials on the surface. the construction combines elements from the ... | two-loop superstring five-point amplitudes. part i. construction via chiral splitting and pure spinors |
in the weak coupling limit of sun yang-mills theory and the o(n) vector model, explicit state counting allows us to demonstrate the existence of a partially deconfined phase: m of n colors deconfine, and m/n gradually grows from zero (confinement) to one (complete deconfinement). we point out that the mechanism admits ... | anatomy of deconfinement |
we show that low-mass-scale string compactifications, with a generic d-brane configuration that realizes the standard model by open strings, can explain the relatively broad peak in the diphoton invariant mass spectrum at 750 gev recently reported by the atlas and cms collaborations. under reasonable assumptions, we de... | 750 gev diphotons from closed string states |
the complete, nonperturbative content of random matrix models is described by resurgent-transseries -- general solutions to their corresponding string-equations. these transseries include exponentially-suppressed multi-instanton amplitudes obtained by eigenvalue tunneling, but they also contain exponentially-enhanced a... | new instantons for matrix models |
deep conceptual problems associated with classical black holes can be addressed in string theory by the "fuzzball" paradigm, which provides a microscopic description of a black hole in terms of a thermodynamically large number of regular, horizonless, geometries with much less symmetry than the corresponding black hole... | black-hole microstate spectroscopy: ringdown, quasinormal modes, and echoes |
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